关键词: 嵌入式微处理器, RISC-V, AHB总线, IP核

Abstract:

In embedded applications, in order to meet the design requirements of small area and low power consumption, a microprocessor supporting RISC-V instruction set architecture is designed. The system adopts a 2-level pipelined architecture and implements the RV32IMAC instruction set. The processor uses AHB bus as the on-chip interconnection bus, which can conveniently call external IP cores for function expansion. The logic function of the microprocessor is verified in VCS environment. The simulation results show that the microprocessor can run normally and stably. Then it is compared with the hummingbird E203 processor and ARM Cortex-M series processor in terms of area, power consumption and performance. The design is 6% smaller than the hummingbird E203 processor, and its power consumption and performance are equivalent to Cortex-M0 processor. The analysis results show that the processor is suitable for development in embedded application fields with small area and low power consumption.

Key words: embedded microprocessor, RISC-V, AHB bus, IP core